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Zorluk: OrtaPreoperative and Postoperative Care

A 62-year-old male is evaluated in the surgical intensive care unit on postoperative day 8 following an open appendectomy for a perforated appendix. After an initially uncomplicated recovery with return of bowel function on day 4, he developed severe, constant abdominal pain, nausea, and bilious vomiting over the past 24 hours. He has not passed flatus since the onset of these symptoms.

His temperature is 39.2∘C39.2^\circ\text{C} (102.6∘F102.6^\circ\text{F}), heart rate is 125/min125/\text{min}, respiratory rate is 24/min24/\text{min}, and blood pressure is 88/55 mmHg88/55\text{ mmHg}.

Physical examination reveals a distended, rigid abdomen with diffuse rebound tenderness and involuntary guarding. Bowel sounds are absent.

Laboratory studies show a leukocyte count of 19,500/mm319,500/\text{mm}^3 with 85%85\% neutrophils, and a serum lactate of 4.6 mmol/L4.6 \text{ mmol/L}.

Supine and upright abdominal radiographs demonstrate multiple dilated loops of small bowel with prominent air-fluid levels and a paucity of colonic gas.

Which of the following is the most appropriate next step in management?

  1. Urgent exploratory laparotomyCevap
  2. B
    Nasogastric tube insertion and serial abdominal examinations
  3. C
    Computed tomography scan of the abdomen and pelvis with intravenous contrast
  4. D
    Ultrasound-guided percutaneous drainage of the abdomen
  5. E
    Broadening of intravenous antibiotics to target resistant pathogens

Cevap

Urgent exploratory laparotomy
The correct answer is urgent exploratory laparotomy. This patient presents with classic signs of a postoperative small bowel obstruction (SBO), confirmed by abdominal radiographs showing dilated small bowel loops and prominent air-fluid levels. However, he also exhibits critical 'red flag' features: high fever, hemodynamic instability (hypotension, marked tachycardia), diffuse peritonitis (rigid abdomen, rebound tenderness), severe leukocytosis, and elevated serum lactate. These findings strongly indicate a complicated SBO with bowel ischemia and strangulation. When these signs are present, initial conservative management (such as nasogastric decompression) must be abandoned in favor of urgent surgical exploration to resect necrotic bowel, establish source control, and prevent overwhelming sepsis and death.

Adım Adım Çözüm

1
Identify the primary diagnosis based on presentation and imaging.
The history of bilious vomiting and obstipation combined with radiographs showing dilated small bowel loops and air-fluid levels confirm a small bowel obstruction (SBO).
Establishing the functional diagnosis is the first step in directing postoperative gastrointestinal management.
2
Assess for complications of the primary diagnosis.
The presence of hemodynamic instability (hypotension, tachycardia), high fever, a rigid abdomen (peritonitis), marked leukocytosis, and lactic acidosis indicate that the SBO is complicated by bowel strangulation and ischemia.
Differentiating between simple and complicated SBO is critical because it fundamentally alters the treatment pathway.
3
Determine the most appropriate intervention based on the clinical stability and severity.
Urgent exploratory laparotomy is chosen over conservative measures.
When clinical signs of strangulation or ischemia are present, conservative management must be bypassed in favor of immediate surgical exploration to resect necrotic bowel and prevent death.

Anahtar Kavram

Surgical management of complicated small bowel obstruction (strangulation/ischemia)
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Preoperative and Postoperative Care

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